Locking device for type-writing machines.



H. H. YELP. LOOKING DEVICE FOR TYPE WRITING MACHINES. Arruonxox nun saw.22. m1.

' 1,037,399, Patented Sept. 3, 1912.

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1,037,399. Patented Sept. 3,1912.

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EENRIHER EBT rnnirpor soozrnsna, ENGLAND.

-LOOKING DEVICE FOB'TYPE-WRITING MACHII VES.

Specification 0! Letter: I'atent.

Patented Sept. 3, 1912.

Application filed September 22, 1911. Serial No. 650,760.

To all whom it may concern This invention relates to improvements in'and relating to accessory'devices for type-' writing machines and hasfor its object provide a device adapted to be locked 1n the typewritingmachme and in its locked positlon to prevent the type bars from being 0erated, so that only persons in ossession oi a key capable of unlockingthe evice, are able to have access to the machine for writin purposes.

n the specification acc0mpa nyin% my previous app ication of the Unitedtates of America Serial Number 572585 filed July 18th 1910 there isdescribed a pan or receptacle adapted to be inserted into thetypewriting machine so as to partly lie under the platen and to receivethe debris arising from erasing o erations performed against the platen.or front-strike t ewriters the receptacle was conveniently given theshape of the cavity in a front-strike typewriting machine, which cavityas is well known is curved or part cylindrical. Now if such a receptaclee locked in the cavity aforesaid it is clear that the type bars will notbe able to rise in order to strike an impression upon the paper on theplaten.

In particular, therefore, the present improvements may be said toconsist in roviding the receptacle aforesaid with a ock for securing it1n the typewriting machine, but there isa larger scope com need by thepresent improvements, inasmuc as the partcylindrical or other shapedobject which,.according to these improvements, is fitted with a lock forenablin the object tobelocked to the frami .of t e machine in the beforementioned are ation to the typebars, may

take the form ofadebris receptacle asafore said, or 01a container foreraser pencihand' tools and so on, such'conta1ner aving; say, a lid orcover:provided'iiwith aisuitable lock; or fastening, or of anoilcontaiihetbrjcam; or. the, device mi ht have -no areceptive capacitybut'might a mere'dumm vada' ted to bear advertising'matterrand 'aapte .ifOI' lockin'glthe machine and-for nothing'else; "1:; In' order toenable this' inventi'on to be readily understood reference is made tothe accompanying drawings in which- Figure 1 is a central verticalsection from front to rear of one exam le of the improved locking deviceas applied to a typewriting machine only sufiicient parts of the latterbeing shown to enable the application of the device to be appreciated.Fig. 2 is a transverse section of the locking device removed and as seenwhen looking toward the rear, the lock being in the operative position.Fi 3 is a similar view but showing the loc in the inoperative position.Fig. 4. is a view similar to Fig. 1 but showing the lock in the inoerative position. Fig. 5 is a plan of a suita le key for use with thisdevice. Fig. 6 is a view similar to Fig. 1 showing a modified form oflocking dev1ce as applied to a; different construction of typewritingmachine. Fig. 7 is a side elevation of the key removed. Fig. 8 is afront elevation of the locking device removed. Fig. 9 is a view similarto Fig. 6 but showing the lock in the inoperative position. Fig. 10 ispartly a rear. elevation and partly a transverse section of a furthermodified form of locking device and .11 is a plan and Fig. 12 a centralvertica section rom front to rear of the same.

According to the examples illustrated by the drawings the device isadapted to be used as a dust and debris receptacle.

In Figs. 1 to 4 the receptacle 1; has an open on b, or an end flangewhich takes beneath a curved or other art a of the framing beneath theplaten when the receptacle is placed upon or over the type bars e and ismoved into its receptive position in which it is seen in Figs. 1 and 4.According to this arrangementa rod f is revolubly mounted in In embrackets g fixed.on the underside o the rece tacle a and one end maybeformed or fitte with a catch vl2. or device adapted, whenthe rod flS-;tlll'll8d, to engage behind thesaid frammg member'c. At its'oppositeend the'rod foarrxes a cam 7' or the li e and'a springla, which 'mayencircle the' rod f, acts uponthc latter so as to alwa s tend tomaintain the .cam 7' inthe path 0 a key I and the catch 72,

in the. operative-'Lpositionas seen: in- Fig. 1. A blockm' or' k'ey.guide formed with 'a suitableikey slot vor-a erture n is fitted in sucha position that w en the correspondingly "shaped 'ke l-is insertedin thekey-way n as shown in ig. 4, the cam j is pushed around in one directionagainst the action of the spring is and the catch it is turned to inocrative position. As shown in Fig. 5, tie edge of the key has a suitablestepped or cam formation in order to enable the cam to be moved aside bymerel forcing the key 1 into the key-way n. en the key 2 is withdrawn,the catch it is moved by the spring is to the operative position seen inFig. 1. The whole of the parts of the lock may be inclosed in a suitablehousing ;0 fixed on the underside of the receptacle a. Therefore it willnow be understood that if the receptacle (1 or other object having thekey Z inserted, be placed in position over the type bars e in thetypewriting machine and the key 6 be then removed, the spring It willthrow up the catch it behind the adjacent framing member a and only aperson possessing a properly shaped key will be able to release thecatch it and remove the receptacle or object a to enable the machine tobe used for writing. As seen in these figures the receptacle a is fittedwith a rubber shoe or guard g on the edge of an extension 7 of the frontwall, which extension reaches below the body of the receptacle a. Thefront wall which rests upon the type bars 6 is thus prevented fromscratching or injuring the enamel or the like on the type bars e. Theinterior of the receptacle is fitted with an upstanding flange s whichfits against the front surface of the framing member 0 and prevents thereceptacle from being inserted too far into the machine.

In another example illustrated by Figs. 6 to 9, a bar, rod or arm ithaving a catch u which may be downwardly directed is so disposed thatthe catch u is adapted for engaging behind the inking pad support '2: ofa certain make of machine. The rod or arm a is pivotally mounted in abracket 10 fixed in a suitable housing 0:, which may actually be withinthe receptacle 0 or other object so that the latter possesses noexterior projection as is the case when the housing is exteriorlyarranged as in Fi 1 to 5. A blade or other spring 3 may e arranged toconstantly tend, to depress the arm at to move its catch it intooperative position so that'in'this arrangement, as in the'foregoing, thekey Z must be in position when the receptacle or object a is ut into themachine and then u on with rawing the key-Z'the spring 3 wil depressthearm and catch into the osition iseen in Fig. 6 and thede vice will elocked in position in the -typewriting machine'iand wlll prevent the -htype '.-bars. from being thrown; upward :as 50-.willnew:be:welliunderstoodity The'ke "Z in this arrangement mayibeofinverted? fsec-' tiona'sshown and be'formedwith 'a suitablyinclinedfi'end zfor lifting'the' mma.

flhigconstruction ashown gi "Figs 1Q 85151 i 5 is; yeryersimilars to'that showrr'r'in- Figs. e -to;

'- somewhat:

9, but in this arrangement the arm or bar 1 is bifurcated at 1 and theinturned ends 2 are inserted through holes in a sheet metal bracket 3 toform a pivotal connection. AL bow spring 4 is preferably connected atone end to the arm it while the other end takes beneath the bracket 3the spring 4 constantly tending to depress the arm t and catch 14.Between the bifurcated parts 1 there is a downwardly bent portion 5 onthe bar which reaches into the path of the key Z. The inner end of thekey Z, when nearly ressed home, comes over a bent saring Blade 6 whichas the key is pressed home raises the inner end of the key therebycompletely raising the arm at and catch it. In any of the constructionsshown, and as seen in Figs. 1, 4, 1O, 11 and 12, the rece tacle a may befitted interiorlv with clips 7 or supporting erasers or other appliancesor in struments used in connection with typewrit ing. In theconstructions shown in Figs. 6 to 12 the receptacles are formed orfitted with wide side flanges 8 which may assist in supporting thereceptacle by taking over and restin upon the upper surface of the frameof t e machine.

It is obvious that, while locks of the kind described are advantageous,the invention is not particularly concerned with special con- 95structions of look as these may be of widely differing types. Theessence of the invention is the rovision of an obi'ect which is capableof eing locked in re ation to the type bars of a typewriting machine sothat 100 t e latter is inoperative when the object is in position andcan only be used by persons possessing a key enabling them to releaseand remove the object as aforesaid, said object being preferably in theform of a re- 5 ceptacle that will serve as a debris collector .as'wellas a tool holder.

What I claim is 1. A locking device for a typewriting machine comprisingan object applicable to said machine in such a position as to render thetype bars thereof inoperative, a lock on said 0 ject adapted to beengaged with a suitable part of such machine and to fasten said objectin said position, and a cushionmg shoe carried by the object forengaging the type bars.

- A locking device for a typewriting machine comprising an objectadapted to be inserted into a cavity or space in said ma- 'chine' withinrange of the t e bars, a housmg earried by the object, ail ll a lock insaid ousmg adapted'to be engaged with a suitable part ofsaid machine andto fasten said object in 'said cavit A locking device for a typewritingmachine. fo'omprising an object conforming with and insertible into aspace 1n saxdmachine, said space being on one slde by the type bars, abase 130 or cavit boundet? housing carried by the object, and a lock insaid housing adapted to be enga ed with a suitable part of said machinean to fasten said ob'ect in said space or cavity.

4. A coking device for a typewriting machine coniprising areceptacle'insertible into a space or cavity in saidmachine, supportingflanges on said receptacle adapted to engo s said machine, and a lock onsaid rece tac e adapted to be enga ed with a suitab e part of saidmachine MIC to fasten said re- I ceptacle in said space or cavity.

5. A locking device for a typewritin machine comprising an objectapplicab e to said machine in such a position as to renderthe type barsthereof inoperative, a housing carrie by the object, a lock in saidhousing adapted to be enga ed with a suitable part of such machine an tofasten said object in said osition, means in said housing constant ytending-to render said lock operative and a key adapted when inserted tohold said lock inoperative. I

6. A locking device for a typewriting inachine comprising an objectapplicable to said machine in such a osition as to render the type barsthereof inoperative, a catch on said object adapted to enga e a part ofsaid machine and to retain sai ob]ect in' said position, a springconstantly tending to force said catch into operative position and a keyadapted to engage said catch and t holdthe latter in the inoperativeposition.

7 "A locking device for a typewriting machine comprising an objectinsertible into a cavity bounded on one side by the type bars,

supporting means thereon adapted to engage sai bars, locking means onsaid ob ect ada ted to be engaged with a suitable part of t e machine toretain said object in said cavit and tool holding means carried by the oject.

8. A locking device for a typewriting machine comprising an ob'ectinsertible into a cavity in said machine ounded on one side by the typebars, locking mechanism on said 0 ject comprising a movable catchadapted to be engaged with a suitable part of said machine, meansconstantly tending to move said catch to oplerative position and asliding key adapte when inserted into the lock to operate said mechanismfor moving said catc to inoperative position substantially as set forth.

9. A locking device for a typewriting machine comprismg a hollow recetacle shaped to fit within the space bounde on one side by the type barsof said machine, a housing on said receptacle, locking mechanism withinthe housing, a catch under the influence of said mechanism and adaptedto be engaged thereby with a suitab e part of said machine and a keyinsertible through a key hole and adapted to enter said housing in orderto operate said mechanism for the removal of said.catch from operativeposition and for holding said catch inoperative substantially as setforth.

HENRY HERBERT YELF. Witnesses:

CHARLES PAGE, A. A. DYER.

Copies of this patent may be obtained for in out: each, by addressingthe "Oommluloner or Iatents, Washington, 1Q."

